Malicious PDF — malware analysis report

Static analysis result for SHA-256 1ac48d5c83cccdd7…

MALICIOUS

PDF

46.5 KB Created: 2020-08-05 23:42:46 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 0c745e8140b9bf7d500a88b72b517006 SHA-1: 9946209ab1b1962b15aa6c65756ee061965944d9 SHA-256: 1ac48d5c83cccdd7a51333f51db7c47355216a13c8726390a4db69e4aefae42e
128 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF contains a heuristic firing for a malicious redirector link, pointing to ttraff.com. It also exhibits characteristics of a link farm, with numerous embedded URLs, many hosted on Shopify. The document body, though heavily obfuscated, contains text related to 'numerologia cabalistica pdf gratis' and includes the malicious redirector URL, suggesting a lure to download potentially malicious content. The presence of a 'download button' heuristic further supports this attack pattern.

Heuristics 4

  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL https://ttraff.com/pify?keyword=numerologia+cabalistica+pdf+gratis
    • http://files.akpsiasu.com/uploads/1/3/2/7/132740905/82cf1a50afa662.pdf
    • http://files.darknessisfalling.com/uploads/1/3/2/6/132681690/7823383.pdf
    • http://files.sebastianknueppel.de/uploads/1/3/0/7/130776381/vulet.pdf
    • http://gagig.stocktontreepros.com/uploads/1/3/1/3/131379706/wofun.pdf
    • http://files.steppingstonebully.org/uploads/1/3/0/7/130738765/golazekelasi.pdf
    • https://cdn.shopify.com/s/files/1/0434/7294/5304/files/demametimibakamijotopo.pdf
    • https://cdn.shopify.com/s/files/1/0433/2702/9400/files/pasotaxupinitexejupuzadix.pdf
    • https://cdn.shopify.com/s/files/1/0438/6249/1286/files/99904103320.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/53059057271.pdf
    • https://cdn.shopify.com/s/files/1/0432/7201/1932/files/37327783849.pdf
    • https://cdn.shopify.com/s/files/1/0427/4293/9814/files/54159365654.pdf
    • https://cdn.shopify.com/s/files/1/0433/0710/6462/files/53611046579.pdf
    • https://cdn.shopify.com/s/files/1/0432/8030/2240/files/35371283188.pdf
    • https://cdn.shopify.com/s/files/1/0432/2318/7614/files/luvezaselepez.pdf
    • https://cdn.shopify.com/s/files/1/0432/0965/4436/files/bivivotapumirunapez.pdf
    • https://cdn.shopify.com/s/files/1/0431/8570/1019/files/59418426719.pdf
    • https://cdn.shopify.com/s/files/1/0439/0413/9416/files/53170369769.pdf
    • https://cdn.shopify.com/s/files/1/0428/9291/8937/files/zununavolune.pdf
    • https://cdn.shopify.com/s/files/1/0439/1940/9320/files/51793014997.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006914.bin
147bc50d0d2e99a08b7e09006938e943ca1e865bdf694ae40edbb7d074420940		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6914 5360 bytes
font_01_sfnt_off00007b50.bin
f9f3525b3589b92a6282868cbac4595f8fea6cdc165c6f03eb7e044ddb0f1725		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7B50 10588 bytes
font_02_sfnt_off00009ec8.bin
ff5f0ef16caf3e97cd1984b3a03ea88e11eab8cf63d2ee006085a4b9995833f3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9EC8 4324 bytes

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